Definition of Dermis

Dermis: The lower or inner layer of the two main
layers of cells that make up the skin.The dermis contains blood vessels, lymph vessels, hair follicles, and
glands that produce sweat, which helps regulate body
temperature, and sebum, an oily substance that helps keep the skin from drying out. Sweat and sebum reach the skin's surface through tiny openings in the skin that act as pores.